From ad14f2084e6445daf2a6823ffdd2b6847d80f94c Mon Sep 17 00:00:00 2001 From: Tobias Brunner Date: Fri, 26 Jan 2018 13:50:04 +0100 Subject: [PATCH] testing: Add ikev2/mobike-virtual-ip-nat scenario This tests moving from a public IP behind a NAT and back (with proper changes of the UDP encapsulation). --- .../mobike-virtual-ip-nat/description.txt | 9 ++++ .../ikev2/mobike-virtual-ip-nat/evaltest.dat | 31 ++++++++++++++ .../hosts/alice/etc/ipsec.conf | 19 +++++++++ .../hosts/alice/etc/iptables.rules | 42 +++++++++++++++++++ .../hosts/alice/etc/strongswan.conf | 12 ++++++ .../hosts/sun/etc/ipsec.conf | 20 +++++++++ .../hosts/sun/etc/iptables.rules | 32 ++++++++++++++ .../hosts/sun/etc/strongswan.conf | 11 +++++ .../ikev2/mobike-virtual-ip-nat/posttest.dat | 6 +++ .../ikev2/mobike-virtual-ip-nat/pretest.dat | 10 +++++ .../ikev2/mobike-virtual-ip-nat/test.conf | 21 ++++++++++ 11 files changed, 213 insertions(+) create mode 100644 testing/tests/ikev2/mobike-virtual-ip-nat/description.txt create mode 100644 testing/tests/ikev2/mobike-virtual-ip-nat/evaltest.dat create mode 100644 testing/tests/ikev2/mobike-virtual-ip-nat/hosts/alice/etc/ipsec.conf create mode 100644 testing/tests/ikev2/mobike-virtual-ip-nat/hosts/alice/etc/iptables.rules create mode 100644 testing/tests/ikev2/mobike-virtual-ip-nat/hosts/alice/etc/strongswan.conf create mode 100644 testing/tests/ikev2/mobike-virtual-ip-nat/hosts/sun/etc/ipsec.conf create mode 100644 testing/tests/ikev2/mobike-virtual-ip-nat/hosts/sun/etc/iptables.rules create mode 100644 testing/tests/ikev2/mobike-virtual-ip-nat/hosts/sun/etc/strongswan.conf create mode 100644 testing/tests/ikev2/mobike-virtual-ip-nat/posttest.dat create mode 100644 testing/tests/ikev2/mobike-virtual-ip-nat/pretest.dat create mode 100644 testing/tests/ikev2/mobike-virtual-ip-nat/test.conf diff --git a/testing/tests/ikev2/mobike-virtual-ip-nat/description.txt b/testing/tests/ikev2/mobike-virtual-ip-nat/description.txt new file mode 100644 index 0000000000..6f1837c86b --- /dev/null +++ b/testing/tests/ikev2/mobike-virtual-ip-nat/description.txt @@ -0,0 +1,9 @@ +The roadwarrior alice is sitting behind the NAT router moon but +at the outset of the scenariou is also directly connected to the 192.168.0.0/24 network +via an additional eth1 interface. alice builds up a tunnel to gateway sun +in order to reach bob in the subnet behind. When the eth1 interface +goes away, alice switches to eth0 and signals the IP address change +via a MOBIKE ADDRESS_UPDATE notification to peer sun. Later the interface +comes back up again and because the best path is preferred (charon.prefer_best_path) +there is another switch to the directly connected path. alice sets +a virtual IP of 10.3.0.3, so that the IPsec policies don't have to be changed. diff --git a/testing/tests/ikev2/mobike-virtual-ip-nat/evaltest.dat b/testing/tests/ikev2/mobike-virtual-ip-nat/evaltest.dat new file mode 100644 index 0000000000..46df600413 --- /dev/null +++ b/testing/tests/ikev2/mobike-virtual-ip-nat/evaltest.dat @@ -0,0 +1,31 @@ +alice::ipsec status 2> /dev/null::mobike.*ESTABLISHED.*192.168.0.50.*PH_IP_SUN::YES +sun:: ipsec status 2> /dev/null::mobike.*ESTABLISHED.*PH_IP_SUN.*192.168.0.50::YES +alice::ipsec status 2> /dev/null::mobike.*INSTALLED.*ESP SPIs::YES +sun:: ipsec status 2> /dev/null::mobike.*INSTALLED.*ESP SPIs::YES +alice::ipsec statusall 2> /dev/null::10.3.0.3/32 === 10.2.0.0/16::YES +sun:: ipsec statusall 2> /dev/null::10.2.0.0/16 === 10.3.0.3/32::YES +alice::ping -c 1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_.eq=1::YES +alice::ifdown eth1::No output expected::NO +alice::sleep 1::No output expected::NO +alice::ipsec status 2> /dev/null::mobike.*ESTABLISHED.*PH_IP_ALICE.*PH_IP_SUN::YES +sun:: ipsec status 2> /dev/null::mobike.*ESTABLISHED.*PH_IP_SUN.*PH_IP_MOON::YES +alice::ipsec status 2> /dev/null::mobike.*INSTALLED.*ESP in UDP SPIs::YES +sun:: ipsec status 2> /dev/null::mobike.*INSTALLED.*ESP in UDP SPIs::YES +alice::ipsec statusall 2> /dev/null::10.3.0.3/32 === 10.2.0.0/16::YES +sun:: ipsec statusall 2> /dev/null::10.2.0.0/16 === 10.3.0.3/32::YES +alice::ping -c 1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_.eq=1::YES +alice::ifup eth1::No output expected::NO +alice::sleep 1::No output expected::NO +alice::ping -c 1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_.eq=1::YES +alice::ipsec status 2> /dev/null::mobike.*ESTABLISHED.*192.168.0.50.*PH_IP_SUN::YES +sun:: ipsec status 2> /dev/null::mobike.*ESTABLISHED.*PH_IP_SUN.*192.168.0.50::YES +alice::ipsec status 2> /dev/null::mobike.*INSTALLED.*ESP SPIs::YES +sun:: ipsec status 2> /dev/null::mobike.*INSTALLED.*ESP SPIs::YES +alice::ipsec statusall 2> /dev/null::10.3.0.3/32 === 10.2.0.0/16::YES +sun:: ipsec statusall 2> /dev/null::10.2.0.0/16 === 10.3.0.3/32::YES +sun::tcpdump::alice1.strongswan.org.*sun.strongswan.org: ESP.*seq=0x1::YES +sun::tcpdump::sun.strongswan.org.*alice1.strongswan.org: ESP.*seq=0x1::YES +moon::tcpdump::moon.strongswan.org.*sun.strongswan.org.*: ESP.*seq=0x2::YES +moon::tcpdump::sun.strongswan.org.*moon.strongswan.org.*: ESP.*seq=0x2::YES +bob::tcpdump::10.3.0.3.*bob.strongswan.org.*ICMP echo request::3 +bob::tcpdump::bob.strongswan.org.*10.3.0.3.*ICMP echo reply::3 diff --git a/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/alice/etc/ipsec.conf b/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/alice/etc/ipsec.conf new file mode 100644 index 0000000000..6039e5f465 --- /dev/null +++ b/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/alice/etc/ipsec.conf @@ -0,0 +1,19 @@ +# /etc/ipsec.conf - strongSwan IPsec configuration file + +config setup + +conn %default + ikelifetime=60m + keylife=20m + rekeymargin=3m + keyingtries=1 + keyexchange=ikev2 + +conn mobike + leftsourceip=%config + leftcert=aliceCert.pem + leftid=alice@strongswan.org + right=PH_IP_SUN + rightid=@sun.strongswan.org + rightsubnet=10.2.0.0/16 + auto=add diff --git a/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/alice/etc/iptables.rules b/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/alice/etc/iptables.rules new file mode 100644 index 0000000000..450e7cef6d --- /dev/null +++ b/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/alice/etc/iptables.rules @@ -0,0 +1,42 @@ +*filter + +# default policy is DROP +-P INPUT DROP +-P OUTPUT DROP +-P FORWARD DROP + +# allow traffic on lo as ifup/ifdown call bind's rndc which accesses TCP 953 +-A OUTPUT -o lo -j ACCEPT +-A INPUT -i lo -j ACCEPT + +# allow IPsec tunnel traffic +-A INPUT -m policy --dir in --pol ipsec --proto esp -j ACCEPT +-A OUTPUT -m policy --dir out --pol ipsec --proto esp -j ACCEPT + +# allow ESP +-A INPUT -i eth0 -p 50 -j ACCEPT +-A INPUT -i eth1 -p 50 -j ACCEPT +-A OUTPUT -o eth0 -p 50 -j ACCEPT +-A OUTPUT -o eth1 -p 50 -j ACCEPT + +# allow IKE +-A INPUT -i eth0 -p udp --sport 500 --dport 500 -j ACCEPT +-A INPUT -i eth1 -p udp --sport 500 --dport 500 -j ACCEPT +-A OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT +-A OUTPUT -o eth1 -p udp --dport 500 --sport 500 -j ACCEPT + +# allow MobIKE +-A INPUT -i eth0 -p udp --sport 4500 --dport 4500 -j ACCEPT +-A INPUT -i eth1 -p udp --sport 4500 --dport 4500 -j ACCEPT +-A OUTPUT -o eth0 -p udp --dport 4500 --sport 4500 -j ACCEPT +-A OUTPUT -o eth1 -p udp --dport 4500 --sport 4500 -j ACCEPT + +# allow ssh +-A INPUT -p tcp --dport 22 -j ACCEPT +-A OUTPUT -p tcp --sport 22 -j ACCEPT + +# allow crl fetch from winnetou +-A INPUT -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT +-A OUTPUT -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT + +COMMIT diff --git a/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/alice/etc/strongswan.conf b/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/alice/etc/strongswan.conf new file mode 100644 index 0000000000..bd51a50bb7 --- /dev/null +++ b/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/alice/etc/strongswan.conf @@ -0,0 +1,12 @@ +# /etc/strongswan.conf - strongSwan configuration file + +charon { + load = random nonce aes sha1 sha2 pem pkcs1 curve25519 gmp x509 curl revocation hmac stroke kernel-netlink socket-default + prefer_best_path = yes + + syslog { + daemon { + knl = 2 + } + } +} diff --git a/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/sun/etc/ipsec.conf b/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/sun/etc/ipsec.conf new file mode 100644 index 0000000000..e187f95694 --- /dev/null +++ b/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/sun/etc/ipsec.conf @@ -0,0 +1,20 @@ +# /etc/ipsec.conf - strongSwan IPsec configuration file + +config setup + +conn %default + ikelifetime=60m + keylife=20m + rekeymargin=3m + keyingtries=1 + keyexchange=ikev2 + +conn mobike + left=PH_IP_SUN + leftcert=sunCert.pem + leftid=@sun.strongswan.org + leftsubnet=10.2.0.0/16 + right=%any + rightsourceip=10.3.0.3 + rightid=alice@strongswan.org + auto=add diff --git a/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/sun/etc/iptables.rules b/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/sun/etc/iptables.rules new file mode 100644 index 0000000000..929b1b2473 --- /dev/null +++ b/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/sun/etc/iptables.rules @@ -0,0 +1,32 @@ +*filter + +# default policy is DROP +-P INPUT DROP +-P OUTPUT DROP +-P FORWARD DROP + +# allow IPsec tunnel traffic +-A FORWARD -m policy --dir in --pol ipsec --proto esp -j ACCEPT +-A FORWARD -m policy --dir out --pol ipsec --proto esp -j ACCEPT + +# allow ESP +-A INPUT -i eth0 -p 50 -j ACCEPT +-A OUTPUT -o eth0 -p 50 -j ACCEPT + +# allow IKE +-A INPUT -i eth0 -p udp --dport 500 -j ACCEPT +-A OUTPUT -o eth0 -p udp --sport 500 -j ACCEPT + +# allow MobIKE +-A INPUT -i eth0 -p udp --dport 4500 -j ACCEPT +-A OUTPUT -o eth0 -p udp --sport 4500 -j ACCEPT + +# allow ssh +-A INPUT -p tcp --dport 22 -j ACCEPT +-A OUTPUT -p tcp --sport 22 -j ACCEPT + +# allow crl fetch from winnetou +-A INPUT -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT +-A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT + +COMMIT diff --git a/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/sun/etc/strongswan.conf b/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/sun/etc/strongswan.conf new file mode 100644 index 0000000000..9241d28d61 --- /dev/null +++ b/testing/tests/ikev2/mobike-virtual-ip-nat/hosts/sun/etc/strongswan.conf @@ -0,0 +1,11 @@ +# /etc/strongswan.conf - strongSwan configuration file + +charon { + load = random nonce aes sha1 sha2 pem pkcs1 curve25519 gmp x509 curl revocation hmac stroke kernel-netlink socket-default + + syslog { + daemon { + knl = 2 + } + } +} diff --git a/testing/tests/ikev2/mobike-virtual-ip-nat/posttest.dat b/testing/tests/ikev2/mobike-virtual-ip-nat/posttest.dat new file mode 100644 index 0000000000..0adb75555a --- /dev/null +++ b/testing/tests/ikev2/mobike-virtual-ip-nat/posttest.dat @@ -0,0 +1,6 @@ +alice::ipsec stop +sun::ipsec stop +alice::ifdown eth1 +alice::iptables-restore < /etc/iptables.flush +sun::iptables-restore < /etc/iptables.flush +moon::iptables -t nat -F diff --git a/testing/tests/ikev2/mobike-virtual-ip-nat/pretest.dat b/testing/tests/ikev2/mobike-virtual-ip-nat/pretest.dat new file mode 100644 index 0000000000..ece8912b95 --- /dev/null +++ b/testing/tests/ikev2/mobike-virtual-ip-nat/pretest.dat @@ -0,0 +1,10 @@ +alice::ifup eth1 +alice::iptables-restore < /etc/iptables.rules +sun::iptables-restore < /etc/iptables.rules +moon::iptables -t nat -A POSTROUTING -o eth0 -s 10.1.0.0/16 -p udp -j SNAT --to-source PH_IP_MOON:1024-1100 +moon::iptables -t nat -A POSTROUTING -o eth0 -s 10.1.0.0/16 -p tcp -j SNAT --to-source PH_IP_MOON:2000-2100 +alice::ipsec start +sun::ipsec start +alice::expect-connection mobike +sun::expect-connection mobike +alice::ipsec up mobike diff --git a/testing/tests/ikev2/mobike-virtual-ip-nat/test.conf b/testing/tests/ikev2/mobike-virtual-ip-nat/test.conf new file mode 100644 index 0000000000..70c64c503d --- /dev/null +++ b/testing/tests/ikev2/mobike-virtual-ip-nat/test.conf @@ -0,0 +1,21 @@ +#!/bin/bash +# +# This configuration file provides information on the +# guest instances used for this test + +# All guest instances that are required for this test +# +VIRTHOSTS="alice moon winnetou sun bob" + +# Corresponding block diagram +# +DIAGRAM="a-m-w-s-b.png" + +# Guest instances on which tcpdump is to be started +# +TCPDUMPHOSTS="bob moon sun" + +# Guest instances on which IPsec is started +# Used for IPsec logging purposes +# +IPSECHOSTS="alice sun" -- 2.39.2